Color

#0b16ea

#0b16ea
hex#0b16ea
rgbrgb(11, 22, 234)
hslhsl(237, 91%, 48%)
oklchoklch(0.435 0.286 265)
Closest name: Burning Ultrablue (#150aec)Relative luminance 0.0659

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#eadf0b

#0b86ea · #6f0bea

#ea0b16 · #16ea0b

Split-complementary

Open in tool →

#ea6f0b · #86ea0b

#ea0b86 · #eadf0b · #0bea6f

Contrast

#0b16ea as textRatioAAAA largeAAAFix
Aaon white
9.06:1passpasspassPasses AAA — no fix needed.
Aaon black
2.32:1failfailfail
  • AA: use #5e66f7 as the text (4.72:1)
  • AAA: use #858bf9 as the text (7.06:1)
  • AA: or shift the background to #b8b8b8 (4.57:1)
  • AAA: or shift the background to #e3e3e3 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b16ea as the background.

Brands using this color

Fonts for this mood

#0b16ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b16ea
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0b16ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b16ea-9f9cc4-df924e-251f2d-e9edf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md